1 // RUN: %clang_cc1 -fsyntax-only -verify %s 2 3 int outer1; // expected-note{{previous definition is here}} 4 extern int outer2; // expected-note{{previous declaration is here}} 5 int outer4; 6 int outer4; // expected-note{{previous definition is here}} 7 int outer5; 8 int outer6(float); // expected-note{{previous definition is here}} 9 int outer7(float); 10 11 void outer_test() { 12 extern float outer1; // expected-error{{redeclaration of 'outer1' with a different type}} 13 extern float outer2; // expected-error{{redeclaration of 'outer2' with a different type}} 14 extern float outer3; // expected-note{{previous declaration is here}} 15 double outer4; 16 extern int outer5; // expected-note{{previous declaration is here}} 17 extern int outer6; // expected-error{{redefinition of 'outer6' as different kind of symbol}} 18 int outer7; 19 extern int outer8; // expected-note{{previous definition is here}} 20 extern int outer9; 21 { 22 extern int outer9; // expected-note{{previous declaration is here}} 23 } 24 } 25 26 int outer3; // expected-error{{redefinition of 'outer3' with a different type}} 27 float outer4; // expected-error{{redefinition of 'outer4' with a different type}} 28 float outer5; // expected-error{{redefinition of 'outer5' with a different type}} 29 int outer8(int); // expected-error{{redefinition of 'outer8' as different kind of symbol}} 30 float outer9; // expected-error{{redefinition of 'outer9' with a different type}} 31 32 extern int outer13; // expected-note{{previous declaration is here}} 33 void outer_shadowing_test() { 34 extern int outer10; 35 extern int outer11; // expected-note{{previous declaration is here}} 36 extern int outer12; // expected-note{{previous declaration is here}} 37 { 38 float outer10; 39 float outer11; 40 float outer12; 41 { 42 extern int outer10; // okay 43 extern float outer11; // expected-error{{redeclaration of 'outer11' with a different type}} 44 static double outer12; 45 { 46 extern float outer12; // expected-error{{redeclaration of 'outer12' with a different type}} 47 extern float outer13; // expected-error{{redeclaration of 'outer13' with a different type}} 48 } 49 } 50 } 51 } 52 53 void g18(void) { // expected-note{{'g18' declared here}} 54 extern int g19; 55 } 56 int *p=&g19; // expected-error{{use of undeclared identifier 'g19'}} \ 57 // expected-warning{{incompatible pointer types}} 58 59 // PR3645 60 static int a; 61 extern int a; // expected-note {{previous declaration is here}} 62 int a; // expected-error {{non-static declaration of 'a' follows static declaration}} 63 64 void f(int x) { // expected-note {{previous definition is here}} 65 extern int x; // expected-error {{extern declaration of 'x' follows non-extern declaration}} 66 } 67 68 extern int b[]; 69 void g20() { extern int b[3]; } // expected-note{{previous declaration is here}} 70 void g21() { extern int b[4]; } // expected-error{{redeclaration of 'b' with a different type: 'int [4]' vs 'int [3]'}} 71
